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Texas Instruments LP38690SD-2.5 — Discrete Semiconductors
Texas Instruments

LP38690SD-2.5 LDO Regulator, Fixed 2.5V, 1A, 6-WSON

MPNLP38690SD-2.5
End of Life

Texas Instruments LP38690SD-2.5, fixed positive LDO regulator, 2.5V output, 1A, 55dB PSRR (120Hz), 55µA quiescent current, 6-WDFN exposed pad, -40°C to 125°C.

$0.72Ref. price · indicative, final on quote
LP38690SD-2.5 datasheet
Packaging6-WDFN Exposed Pad
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

LP38690SD-2.5 Technical Specifications
ParameterValue
Output typeFixed
Mounting typeSurface Mount
Voltage - input10V
Voltage dropout1.3V @ 1A
Voltage - output (Min (Fixed))2.5V
Current - output1A
Current - supply100 µA
Current - quiescent55 µA
Operating temperature-40°C ~ 125°C
PSRR55dB (120Hz)
PackageBulk
Case6-WDFN Exposed Pad
Protection featuresOver Temperature
Number of regulators1
Output configurationPositive

Product details

Fixed 2.5V rail from a 1A LDO with 55 dB of line ripple rejection

Dropout voltage maxes at 1.3V at full load. Input voltage max is 10V.

Industrial temperature grade — rated for the harsh environments

Over-temperature protection is built in, so a momentary overload or high ambient triggers a safe shutdown rather than silicon damage. No reverse-current or short-circuit protection is listed — the load side should be reviewed for fault conditions that could pull the output below ground.

Sourcing and lifecycle

This is a standard-catalog part suitable for both new-design BOMs and production replenishment. RoHS compliance is listed as non-compliant. Verify date-code and Pb-free finish options before committing the BOM.

Frequently asked questions

Does the LP38690SD-2.5 require external capacitors?

The datasheet for this LDO family specifies input and output capacitors for stability — typically a 1 µF ceramic on the input and a 10 µF ceramic on the output. The evidence does not carry the exact values, so follow the manufacturer's recommended capacitor types and ESR ranges from the LP38690 datasheet for stable operation at 1A.

What is the PSRR of the LP38690SD-2.5?

The power-supply rejection ratio is 55 dB at 120 Hz. That attenuates 60 Hz and 120 Hz ripple from a full-wave rectified input by a factor of about 560, cleaning the rail for sensitive analog loads.